Tour buses in London are far too expensive. Transport for London can make it more affordable with a simple app using a smartphone’s GPS location services.
The app works out where you are and what bus you're on. As it's using location services, it can tell you facts about places exactly when you pass them.
You can also choose specific topics such as history, architecture or music.
Learn about the London Underground with offline mode. Just select the tube line, download the stories in advance and listen to them even without signal.